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141 lines
3.3 KiB
Ruby
141 lines
3.3 KiB
Ruby
class ApplicationRequest < ActiveRecord::Base
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enum req_type: %i(http_total
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http_2xx
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http_background
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http_3xx
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http_4xx
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http_5xx
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page_view_crawler
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page_view_logged_in
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page_view_anon)
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cattr_accessor :autoflush, :autoflush_seconds, :last_flush
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# auto flush if backlog is larger than this
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self.autoflush = 2000
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# auto flush if older than this
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self.autoflush_seconds = 5.minutes
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self.last_flush = Time.now.utc
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def self.increment!(type, opts=nil)
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key = redis_key(type)
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val = $redis.incr(key).to_i
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$redis.expire key, 3.days
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autoflush = (opts && opts[:autoflush]) || self.autoflush
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if autoflush > 0 && val >= autoflush
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write_cache!
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return
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end
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if (Time.now.utc - last_flush).to_i > autoflush_seconds
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write_cache!
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end
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end
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def self.write_cache!(date=nil)
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if date.nil?
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write_cache!(Time.now.utc)
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write_cache!(Time.now.utc.yesterday)
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return
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end
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self.last_flush = Time.now.utc
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date = date.to_date
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# this may seem a bit fancy but in so it allows
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# for concurrent calls without double counting
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req_types.each do |req_type,_|
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key = redis_key(req_type,date)
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val = $redis.get(key).to_i
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next if val == 0
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new_val = $redis.incrby(key, -val).to_i
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if new_val < 0
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# undo and flush next time
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$redis.incrby(key, val)
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next
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end
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id = req_id(date,req_type)
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where(id: id).update_all(["count = count + ?", val])
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end
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end
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def self.clear_cache!(date=nil)
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if date.nil?
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clear_cache!(Time.now.utc)
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clear_cache!(Time.now.utc.yesterday)
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return
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end
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req_types.each do |req_type,_|
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key = redis_key(req_type,date)
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$redis.del key
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end
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end
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protected
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def self.req_id(date,req_type,retries=0)
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req_type_id = req_types[req_type]
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# a poor man's upsert
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id = where(date: date, req_type: req_type_id).pluck(:id).first
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id ||= create!(date: date, req_type: req_type_id, count: 0).id
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rescue # primary key violation
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if retries == 0
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req_id(date,req_type,1)
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else
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raise
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end
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end
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def self.redis_key(req_type, time=Time.now.utc)
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"app_req_#{req_type}#{time.strftime('%Y%m%d')}"
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end
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def self.stats
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@stats ||= begin
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s = HashWithIndifferentAccess.new({
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all_total: 0,
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all_30_days: 0,
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all_7_days: 0
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})
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self.req_types.each do |key, i|
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query = self.where(req_type: i)
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s["#{key}_total"] = query.sum(:count)
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s["#{key}_30_days"] = query.where("date > ?", 30.days.ago).sum(:count)
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s["#{key}_7_days"] = query.where("date > ?", 7.days.ago).sum(:count)
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s[:all_total] += s["#{key}_total"]
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s[:all_30_days] += s["#{key}_30_days"]
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s[:all_7_days] += s["#{key}_7_days"]
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end
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s
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end
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end
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end
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# == Schema Information
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#
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# Table name: application_requests
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#
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# id :integer not null, primary key
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# date :date not null
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# req_type :integer not null
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# count :integer default(0), not null
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#
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# Indexes
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#
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# index_application_requests_on_date_and_req_type (date,req_type) UNIQUE
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#
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